1) List the known and unknown quantities.
Sample: carbon dioxide (CO2).
Volume: 250 mL.
Pressure: 1.0 atm.
Temperature: 22 ºC.
Ideal gas constant:
2) Set the equation
[tex]PV=nRT[/tex]
3) Converting units.
3.1-Convert ºC to K.
[tex]K=ºC+273.15[/tex][tex]K=22\text{ }ºC+273.15=295.15\text{ }K[/tex]
3.2-Convert mL to L
1000 mL = 1 L
[tex]L=250\text{ }mL*\frac{1\text{ }L}{1000\text{ }mL}=0.250\text{ }L[/tex]
4) Plug in the known quantities
